Fuses & Circuit Breakers

Although they work in different ways, fuses and circuit breakers broadly have the same purpose; to protect electrical appliances and electrical circuits from short circuits, and excessive current (called overcurrent or overload).

Fuses

Fuses are relatively low cost electrical safety devices. If too much current enters the circuit, the fuse will burn out (sometimes called blowing out). When the fuse blows out it breaks the circuit. This protects the attached devices and allows you to touch devices without being electrocuted. When the fuse blows, it must be replaced before using the device or appliance again.

Circuit breakers

Circuit breakers work in a similar way to fuses, but they are resettable. Once a fault is detected (this is typically a short circuit or an excessive amount of current flowing through the circuit) the circuit breaker will interrupt the flow of current. When the circuit breaker trips, it's simply a case of flicking a switch to reset the circuit breaker. As soon as you've reset the circuit breaker, it is ready to use again.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses

35151 Products showing for Fuses & Circuit Breakers

223 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3716
  • Mfr. Part No. 3VA2025-8KP32-0AA0
Each
$4,142.05(exc. GST)
Limited stock
Legrand HX³ 1 Phase Busbar, 230V, 17.7mm Pitch
  • RS Stock No. 823-4699
  • Mfr. Part No. 4 049 28
Each
$28.57(exc. GST)
Temporarily out of stock
xEnergy Basic Distribution Board Enclosure
  • RS Stock No. 252-463
  • Mfr. Part No. 193172 BP-O-350/11-EP-W
Each
$1,254.99(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, Masterpact MCCB 4P 800A, Fixed Mount
  • RS Stock No. 248-3768
  • Mfr. Part No. LV847218
Each
$15,106.37(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, Masterpact MCCB 4P 1.6kA, Fixed Mount
  • RS Stock No. 248-3798
  • Mfr. Part No. LV848279
Each
$29,643.90(exc. GST)
Temporarily out of stock
Siemens Auxiliary Release Shunt trip for use with 3VA1, 3VA20-26
  • RS Stock No. 275-966
  • Mfr. Part No. 3VA9988-0BA21
Each
$251.15(exc. GST)
Temporarily out of stock
Eaton Eaton xEnergy Main Partitions for use with Cable Connection Area
  • RS Stock No. 243-107
  • Mfr. Part No. 184642 XPRCC2006
Each
$481.93(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-3766
  • Mfr. Part No. 1SDA071760R1
Each
$48,729.63(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 1A Curve K, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7977
  • Mfr. Part No. 2CDS252001R0217 S202-K1
Each
$183.50(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3490
  • Mfr. Part No. 1SDA071457R1
Each
$20,279.41(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 400A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 432-923
  • Mfr. Part No. NLLL36400U53X
Each
$34,797.88(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA , Fixed
  • RS Stock No. 127-532
  • Mfr. Part No. 183463 IZMX16N3-P16F-1
Each
$25,017.95(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Touch LI, 4 channels
  • RS Stock No. 259-3577
  • Mfr. Part No. 1SDA071554R1
Each
$14,013.03(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 25A, Fixed
  • RS Stock No. 122-361
  • Mfr. Part No. LV510501
Each
$288.94(exc. GST)
Temporarily out of stock
Schurter Thermal Circuit Breaker - T12 Single Pole 240V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 173-9836
  • Mfr. Part No. 4410.0106
Each (In a Box of 20)
$46.576(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Touch LSIG, 4 channels
  • RS Stock No. 259-3499
  • Mfr. Part No. 1SDA071466R1
Each
$15,037.36(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 2kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3165
  • Mfr. Part No. 1SDA071027R1
Each
$23,305.47(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 3 channels
  • RS Stock No. 259-4170
  • Mfr. Part No. 1SDA072285R1
Each
$13,232.46(exc. GST)
In Stock
Better World
Siemens Sentron 5SY7 MCB, 1P, 1A Curve C, 230V AC, 15 kA Breaking Capacity
  • RS Stock No. 622-0143
  • Mfr. Part No. 5SY7101-7
Each
$56.92(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3764
  • Mfr. Part No. 1SDA071758R1
Each
$45,904.71(exc. GST)
1
223
1758
Results per page

Related links